Practical superconductor development for electrical power applications
Abstract
Development of useful high-temperature superconductors (HTSCs) requires synthesis of the various superconducting oxide compounds; fabrication of wires, tapes, and thin films from these compounds; capability of forming composite structures that incorporate integral insulators or stabilizers; and design of efficient components and systems. This report documents research efforts aimed at producing superconducting components based on the oxide systems Y-Ba-Cu-O, Bi-Sr-Ca-Cu-O, and Tl-Ca-Ba-Cu-O. Topics discussed are synthesis of compounds from each system; fabrication of monolithic tapes, wires, and castings; effects of silver additions on mechanical and electrical properties; fabrication of composite tapes that incorporate silver or ceramic substrates; use of pressure or electrochemical bonding to connect the superconductors to high-conductivity metals; fabrication of thin films for electronic devices; optimization of heat treatment schedules; the microstructural, mechanical, and electrical properties of the forms produced; and studies on the thermomagnetic stabilities of HTSCs and the implications for system design. Collaborations in this research between Argonne National Laboratory, universities, industrial partners, and other national laboratories are identified and results from the collaborations are presented. The report closes with an assessment of the status of the research efforts as of September 1988.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1989
- Bibcode:
- 1989STIN...9014487P
- Keywords:
-
- Electrical Properties;
- Fabrication;
- Heat Treatment;
- High Temperature Superconductors;
- Mechanical Properties;
- Microstructure;
- Thermal Stability;
- Thin Films;
- Barium Oxides;
- Bismuth Oxides;
- Calcium Oxides;
- Composite Materials;
- Copper Oxides;
- Strontium Compounds;
- Thallium Compounds;
- Yttrium Oxides;
- Electronics and Electrical Engineering